The difference between Light Eco and White Eco

Now, I am a hardcore fan of Jak and Daxter, but there is one thing I dont get. In the first game at the end of the battle with Gol & Maia, Red, Yellow, Blue, and Green Eco forms together to make the fabled White Eco and Jak uses it to destroy Gol & Maia. Later in Jak 3, Jak encounters Light Eco which can transform him into Light Jak. But I've noticed that there are people who are calling the White Eco in The Precursor Legacy Light Eco. Is there something I'm missing, are they the same thing? Or are these a mistake on their parts?